Mercurial > cpython-lru_cache-weakref

annotate Lib/json/encoder.py @ 74135:9c19df6c8ea0 3.2

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News entry for Issue12798
author Senthil Kumaran <senthil@uthcode.com>
date Fri, 23 Dec 2011 11:11:21 +0800
parents fe8bbaff5a27
children 06f21c6e0f2b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 """Implementation of JSONEncoder
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2 """
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3 import re
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4
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5 try:
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6 from _json import encode_basestring_ascii as c_encode_basestring_ascii
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7 except ImportError:
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8 c_encode_basestring_ascii = None
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9 try:
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10 from _json import make_encoder as c_make_encoder
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11 except ImportError:
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12 c_make_encoder = None
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13
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14 ESCAPE = re.compile(r'[\x00-\x1f\\"\b\f\n\r\t]')
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15 ESCAPE_ASCII = re.compile(r'([\\"]|[^\ -~])')
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16 HAS_UTF8 = re.compile(b'[\x80-\xff]')
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17 ESCAPE_DCT = {
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18 '\\': '\\\\',
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19 '"': '\\"',
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20 '\b': '\\b',
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21 '\f': '\\f',
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22 '\n': '\\n',
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23 '\r': '\\r',
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24 '\t': '\\t',
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25 }
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26 for i in range(0x20):
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27 ESCAPE_DCT.setdefault(chr(i), '\\u{0:04x}'.format(i))
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28 #ESCAPE_DCT.setdefault(chr(i), '\\u%04x' % (i,))
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29
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30 # Assume this produces an infinity on all machines (probably not guaranteed)
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31 INFINITY = float('1e66666')
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32 FLOAT_REPR = repr
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33
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34 def encode_basestring(s):
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35 """Return a JSON representation of a Python string
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36
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37 """
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38 def replace(match):
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39 return ESCAPE_DCT[match.group(0)]
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40 return '"' + ESCAPE.sub(replace, s) + '"'
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41
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42
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43 def py_encode_basestring_ascii(s):
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44 """Return an ASCII-only JSON representation of a Python string
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45
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46 """
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47 def replace(match):
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48 s = match.group(0)
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49 try:
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50 return ESCAPE_DCT[s]
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51 except KeyError:
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52 n = ord(s)
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53 if n < 0x10000:
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54 return '\\u{0:04x}'.format(n)
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55 #return '\\u%04x' % (n,)
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56 else:
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57 # surrogate pair
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58 n -= 0x10000
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59 s1 = 0xd800 | ((n >> 10) & 0x3ff)
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60 s2 = 0xdc00 | (n & 0x3ff)
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61 return '\\u{0:04x}\\u{1:04x}'.format(s1, s2)
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62 return '"' + ESCAPE_ASCII.sub(replace, s) + '"'
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63
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64
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65 encode_basestring_ascii = (
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66 c_encode_basestring_ascii or py_encode_basestring_ascii)
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67
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68 class JSONEncoder(object):
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69 """Extensible JSON <http://json.org> encoder for Python data structures.
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70
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71 Supports the following objects and types by default:
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72
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73 +-------------------+---------------+
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74 | Python | JSON |
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75 +===================+===============+
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76 | dict | object |
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77 +-------------------+---------------+
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78 | list, tuple | array |
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79 +-------------------+---------------+
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80 | str | string |
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81 +-------------------+---------------+
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82 | int, float | number |
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83 +-------------------+---------------+
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84 | True | true |
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85 +-------------------+---------------+
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86 | False | false |
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87 +-------------------+---------------+
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88 | None | null |
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89 +-------------------+---------------+
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90
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91 To extend this to recognize other objects, subclass and implement a
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92 ``.default()`` method with another method that returns a serializable
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93 object for ``o`` if possible, otherwise it should call the superclass
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94 implementation (to raise ``TypeError``).
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95
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96 """
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97 item_separator = ', '
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98 key_separator = ': '
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99 def __init__(self, skipkeys=False, ensure_ascii=True,
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100 check_circular=True, allow_nan=True, sort_keys=False,
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101 indent=None, separators=None, default=None):
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102 """Constructor for JSONEncoder, with sensible defaults.
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103
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104 If skipkeys is false, then it is a TypeError to attempt
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105 encoding of keys that are not str, int, float or None. If
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106 skipkeys is True, such items are simply skipped.
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107
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108 If ensure_ascii is true, the output is guaranteed to be str
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109 objects with all incoming non-ASCII characters escaped. If
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110 ensure_ascii is false, the output can contain non-ASCII characters.
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111
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112 If check_circular is true, then lists, dicts, and custom encoded
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113 objects will be checked for circular references during encoding to
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114 prevent an infinite recursion (which would cause an OverflowError).
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115 Otherwise, no such check takes place.
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116
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117 If allow_nan is true, then NaN, Infinity, and -Infinity will be
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118 encoded as such. This behavior is not JSON specification compliant,
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119 but is consistent with most JavaScript based encoders and decoders.
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120 Otherwise, it will be a ValueError to encode such floats.
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121
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122 If sort_keys is true, then the output of dictionaries will be
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123 sorted by key; this is useful for regression tests to ensure
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124 that JSON serializations can be compared on a day-to-day basis.
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125
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126 If indent is a non-negative integer, then JSON array
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127 elements and object members will be pretty-printed with that
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128 indent level. An indent level of 0 will only insert newlines.
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129 None is the most compact representation.
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130
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131 If specified, separators should be a (item_separator, key_separator)
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132 tuple. The default is (', ', ': '). To get the most compact JSON
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133 representation you should specify (',', ':') to eliminate whitespace.
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134
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135 If specified, default is a function that gets called for objects
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136 that can't otherwise be serialized. It should return a JSON encodable
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137 version of the object or raise a ``TypeError``.
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138
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139 """
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140
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141 self.skipkeys = skipkeys
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142 self.ensure_ascii = ensure_ascii
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143 self.check_circular = check_circular
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144 self.allow_nan = allow_nan
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145 self.sort_keys = sort_keys
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146 self.indent = indent
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147 if separators is not None:
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148 self.item_separator, self.key_separator = separators
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149 if default is not None:
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150 self.default = default
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151
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152 def default(self, o):
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153 """Implement this method in a subclass such that it returns
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154 a serializable object for ``o``, or calls the base implementation
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155 (to raise a ``TypeError``).
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156
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157 For example, to support arbitrary iterators, you could
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158 implement default like this::
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159
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160 def default(self, o):
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161 try:
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162 iterable = iter(o)
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163 except TypeError:
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164 pass
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165 else:
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166 return list(iterable)
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167 return JSONEncoder.default(self, o)
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168
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169 """
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170 raise TypeError(repr(o) + " is not JSON serializable")
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171
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172 def encode(self, o):
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173 """Return a JSON string representation of a Python data structure.
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174
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175 >>> JSONEncoder().encode({"foo": ["bar", "baz"]})
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176 '{"foo": ["bar", "baz"]}'
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177
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178 """
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179 # This is for extremely simple cases and benchmarks.
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180 if isinstance(o, str):
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181 if self.ensure_ascii:
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182 return encode_basestring_ascii(o)
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183 else:
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184 return encode_basestring(o)
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185 # This doesn't pass the iterator directly to ''.join() because the
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186 # exceptions aren't as detailed. The list call should be roughly
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187 # equivalent to the PySequence_Fast that ''.join() would do.
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188 chunks = self.iterencode(o, _one_shot=True)
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189 if not isinstance(chunks, (list, tuple)):
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190 chunks = list(chunks)
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191 return ''.join(chunks)
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192
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193 def iterencode(self, o, _one_shot=False):
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194 """Encode the given object and yield each string
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195 representation as available.
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196
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197 For example::
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198
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199 for chunk in JSONEncoder().iterencode(bigobject):
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200 mysocket.write(chunk)
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201
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202 """
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203 if self.check_circular:
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204 markers = {}
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205 else:
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206 markers = None
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207 if self.ensure_ascii:
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208 _encoder = encode_basestring_ascii
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209 else:
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210 _encoder = encode_basestring
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211
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212 def floatstr(o, allow_nan=self.allow_nan,
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213 _repr=FLOAT_REPR, _inf=INFINITY, _neginf=-INFINITY):
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214 # Check for specials. Note that this type of test is processor
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215 # and/or platform-specific, so do tests which don't depend on the
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216 # internals.
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217
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218 if o != o:
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219 text = 'NaN'
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220 elif o == _inf:
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221 text = 'Infinity'
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222 elif o == _neginf:
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223 text = '-Infinity'
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224 else:
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225 return _repr(o)
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226
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227 if not allow_nan:
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228 raise ValueError(
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229 "Out of range float values are not JSON compliant: " +
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230 repr(o))
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231
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232 return text
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233
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234
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235 if (_one_shot and c_make_encoder is not None
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236 and self.indent is None):
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237 _iterencode = c_make_encoder(
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238 markers, self.default, _encoder, self.indent,
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239 self.key_separator, self.item_separator, self.sort_keys,
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240 self.skipkeys, self.allow_nan)
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241 else:
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242 _iterencode = _make_iterencode(
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243 markers, self.default, _encoder, self.indent, floatstr,
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244 self.key_separator, self.item_separator, self.sort_keys,
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245 self.skipkeys, _one_shot)
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246 return _iterencode(o, 0)
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247
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248 def _make_iterencode(markers, _default, _encoder, _indent, _floatstr,
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249 _key_separator, _item_separator, _sort_keys, _skipkeys, _one_shot,
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250 ## HACK: hand-optimized bytecode; turn globals into locals
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251 ValueError=ValueError,
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252 dict=dict,
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253 float=float,
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254 id=id,
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255 int=int,
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256 isinstance=isinstance,
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257 list=list,
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258 str=str,
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259 tuple=tuple,
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260 ):
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261
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262 if _indent is not None and not isinstance(_indent, str):
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263 _indent = ' ' * _indent
94c5ad981c1b Issue #5729: json.dumps to support using '\t' as an indent string
Raymond Hettinger <python@rcn.com>
parents: 63575
diff changeset
264
53667
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
265 def _iterencode_list(lst, _current_indent_level):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
266 if not lst:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
267 yield '[]'
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
268 return
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
269 if markers is not None:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
270 markerid = id(lst)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
271 if markerid in markers:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
272 raise ValueError("Circular reference detected")
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
273 markers[markerid] = lst
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
274 buf = '['
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
275 if _indent is not None:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
276 _current_indent_level += 1
65804
94c5ad981c1b Issue #5729: json.dumps to support using '\t' as an indent string
Raymond Hettinger <python@rcn.com>
parents: 63575
diff changeset
277 newline_indent = '\n' + _indent * _current_indent_level
53667
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
278 separator = _item_separator + newline_indent
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
279 buf += newline_indent
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
280 else:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
281 newline_indent = None
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
282 separator = _item_separator
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
283 first = True
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
284 for value in lst:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
285 if first:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
286 first = False
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
287 else:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
288 buf = separator
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
289 if isinstance(value, str):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
290 yield buf + _encoder(value)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
291 elif value is None:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
292 yield buf + 'null'
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
293 elif value is True:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
294 yield buf + 'true'
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
295 elif value is False:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
296 yield buf + 'false'
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
297 elif isinstance(value, int):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
298 yield buf + str(value)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
299 elif isinstance(value, float):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
300 yield buf + _floatstr(value)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
301 else:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
302 yield buf
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
303 if isinstance(value, (list, tuple)):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
304 chunks = _iterencode_list(value, _current_indent_level)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
305 elif isinstance(value, dict):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
306 chunks = _iterencode_dict(value, _current_indent_level)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
307 else:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
308 chunks = _iterencode(value, _current_indent_level)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
309 for chunk in chunks:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
310 yield chunk
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
311 if newline_indent is not None:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
312 _current_indent_level -= 1
65804
94c5ad981c1b Issue #5729: json.dumps to support using '\t' as an indent string
Raymond Hettinger <python@rcn.com>
parents: 63575
diff changeset
313 yield '\n' + _indent * _current_indent_level
53667
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
314 yield ']'
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
315 if markers is not None:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
316 del markers[markerid]
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
317
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
318 def _iterencode_dict(dct, _current_indent_level):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
319 if not dct:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
320 yield '{}'
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
321 return
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
322 if markers is not None:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
323 markerid = id(dct)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
324 if markerid in markers:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
325 raise ValueError("Circular reference detected")
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
326 markers[markerid] = dct
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
327 yield '{'
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
328 if _indent is not None:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
329 _current_indent_level += 1
65804
94c5ad981c1b Issue #5729: json.dumps to support using '\t' as an indent string
Raymond Hettinger <python@rcn.com>
parents: 63575
diff changeset
330 newline_indent = '\n' + _indent * _current_indent_level
53667
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
331 item_separator = _item_separator + newline_indent
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
332 yield newline_indent
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
333 else:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
334 newline_indent = None
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
335 item_separator = _item_separator
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
336 first = True
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
337 if _sort_keys:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
338 items = sorted(dct.items(), key=lambda kv: kv[0])
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
339 else:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
340 items = dct.items()
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
341 for key, value in items:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
342 if isinstance(key, str):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
343 pass
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
344 # JavaScript is weakly typed for these, so it makes sense to
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
345 # also allow them. Many encoders seem to do something like this.
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
346 elif isinstance(key, float):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
347 key = _floatstr(key)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
348 elif key is True:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
349 key = 'true'
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
350 elif key is False:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
351 key = 'false'
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
352 elif key is None:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
353 key = 'null'
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
354 elif isinstance(key, int):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
355 key = str(key)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
356 elif _skipkeys:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
357 continue
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
358 else:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
359 raise TypeError("key " + repr(key) + " is not a string")
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
360 if first:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
361 first = False
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
362 else:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
363 yield item_separator
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
364 yield _encoder(key)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
365 yield _key_separator
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
366 if isinstance(value, str):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
367 yield _encoder(value)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
368 elif value is None:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
369 yield 'null'
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
370 elif value is True:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
371 yield 'true'
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
372 elif value is False:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
373 yield 'false'
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
374 elif isinstance(value, int):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
375 yield str(value)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
376 elif isinstance(value, float):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
377 yield _floatstr(value)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
378 else:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
379 if isinstance(value, (list, tuple)):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
380 chunks = _iterencode_list(value, _current_indent_level)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
381 elif isinstance(value, dict):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
382 chunks = _iterencode_dict(value, _current_indent_level)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
383 else:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
384 chunks = _iterencode(value, _current_indent_level)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
385 for chunk in chunks:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
386 yield chunk
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
387 if newline_indent is not None:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
388 _current_indent_level -= 1
65804
94c5ad981c1b Issue #5729: json.dumps to support using '\t' as an indent string
Raymond Hettinger <python@rcn.com>
parents: 63575
diff changeset
389 yield '\n' + _indent * _current_indent_level
53667
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
390 yield '}'
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
391 if markers is not None:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
392 del markers[markerid]
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
393
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
394 def _iterencode(o, _current_indent_level):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
395 if isinstance(o, str):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
396 yield _encoder(o)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
397 elif o is None:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
398 yield 'null'
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
399 elif o is True:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
400 yield 'true'
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
401 elif o is False:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
402 yield 'false'
63273
aa19a7cc1bf3 Syntax cleanup.
Florent Xicluna <florent.xicluna@gmail.com>
parents: 54373
diff changeset
403 elif isinstance(o, int):
53667
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
404 yield str(o)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
405 elif isinstance(o, float):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
406 yield _floatstr(o)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
407 elif isinstance(o, (list, tuple)):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
408 for chunk in _iterencode_list(o, _current_indent_level):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
409 yield chunk
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
410 elif isinstance(o, dict):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
411 for chunk in _iterencode_dict(o, _current_indent_level):
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
412 yield chunk
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
413 else:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
414 if markers is not None:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
415 markerid = id(o)
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
416 if markerid in markers:
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
417 raise ValueError("Circular reference detected")
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
418 markers[markerid] = o
f686aced02a3 port simplejson upgrade from the trunk #4136
Benjamin Peterson <benjamin@python.org>
parents: 46745
diff changeset
419 o = _default(o)
f686aced02a3 port simplejson upgrade from the trunk #4136
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parents: 46745
diff changeset
420 for chunk in _iterencode(o, _current_indent_level):
f686aced02a3 port simplejson upgrade from the trunk #4136
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parents: 46745
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421 yield chunk
f686aced02a3 port simplejson upgrade from the trunk #4136
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parents: 46745
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422 if markers is not None:
f686aced02a3 port simplejson upgrade from the trunk #4136
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parents: 46745
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423 del markers[markerid]
f686aced02a3 port simplejson upgrade from the trunk #4136
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parents: 46745
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424 return _iterencode